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US 2024/0195148 A1Published application
Integrated silicon (si) tunable laser
OwnerRanjeet Kumar, Duanni Huang +4inventors
InventorsRanjeet Kumar, Duanni Huang, Guan-Lin Su, Xinru Wu, Richard Jones, Haisheng Rong
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Abstract
Various embodiments described herein may relate to apparatuses, systems, techniques, and/or processes that are directed to tunable lasers. Specifically, embodiments herein may relate to chips that include both a tunable laser portion as well as a WLL portion on a same silicon substrate. Other embodiments may be described and/or claimed.
Claims20
A chip comprising:
- a tunable laser portion configured to output, to another element on the chip, an optical signal at a selected wavelength of a plurality of possible wavelengths;
- a wavelength locker (WLL) portion configured to receive the optical signal from the tunable laser portion and facilitate locking a wavelength of the optical signal output from the tunable laser portion at the selected wavelength;
- an amplifier configured to receive the optical signal from the tunable laser portion and amplify or attenuate the optical signal to generate an output optical signal;
- and
- an output port configured to output the output optical signal from the chip.
2 more elements
A photonic integrated circuit, comprising:
- a first portion on a chip, the first portion comprising a first optical gain region and at least first and second ring modulators;
- a second portion on the chip and optically coupled to the first portion, the second portion comprising a ring resonator and at least first and second silicon photodiodes;
- and
- a third portion on the chip and optically coupled to the first portion and to the second portion, the third portion comprising a second optical region and a third silicon photodiode.
1 more element
Control logic configured to perform a method comprising:
- identifying, from a chip that includes a tunable laser portion and a wavelength locker (WLL) portion, feedback received from the WLL portion, wherein the feedback is related to a wavelength of an optical signal generated by the tunable laser portion, and wherein the wavelength is intended to be at a selected wavelength of a plurality of possible wavelengths;
- identifying, based on the feedback, that the wavelength of the optical signal generated by the tunable laser portion is not at the selected wavelength;
- and
- transmitting, to a phase tuner of the tunable laser portion, a control signal, wherein the control signal is to cause the phase tuner to adjust the wavelength of the optical signal within the tunable laser portion such that the wavelength of the optical signal within the tunable laser portion is the selected wavelength.
1 more element
Dependencies are inferred from the claim text.